Preservative waterproof and moldproof compound for wrapped food products and method of producing the same



* narrate stares PATIENT orrrca.

. I AItI, OF PHILADELPHIA, PENNSYLVANIA.

PEESERVATIVE TATE/00F ANJD MOLDPROOE' COMPOUND FOR, WRAPPED PRQDUGTS ANDMEOD 01E PRGDUGING THE 1,46)? ,aoo. No Drawing.

To all whom it may concern:

Be it known that T, CHARLES G. FERRARI, a citizen of the United States,residing at the city of Philadelphia, in the county of 'or yieldingpreservative mixtures so compounded as to become homogeneous and forapplying to foil wrapped food products, as.

cheeses, as well as yeast and other similar products, to prevent growthof aerobic molds, the absorption by the wrapped products of undesirableodors, as well as for rendering proof of such food packages againstmoisture or air.

Hitherto it was the general custom to ut up cheese, such as the cream,ancre,

eufohatel, as well as other brands or types, in a ffoil wrapper, butbysudden changes of temperature or climatic conditions the aerobic moldsformed quickly and not only deteriorated the products, but transformedthem into a condition rendering such unsafe for use. This hasparticularly happened in summer weather.

around the wrapped products, but this has not been an assured success,because not pliable or elastic in appllcation, for it is found whenbecoming hard the wrapped products as to the character thereof fromthefollowin description of the same.

he compounding of the mixture in one Specification .of Letters Patent.

Application filed April 13, 1921.

thetic compound having melting'point of 90 to 100 centigrade. Physicallyit is brittle, amorphous, resem- In the past in some cases paraflin-wax'was employed Patented FMS 21, T9220 Serial no. ec oes.

form which has been found for some time past highly eiiicient, is asfollows Mineral oil 3. 5% Paraffin-wax 87. 5% Beeswax 5. 0%Paracoumarone resin 4:. 0%

The mineral oil is technically liquid petrolatum and is known under theappellation of petrolatum liquidum, liquid parafiin and mineral oil. Itis a mixture of liquid hydrocarbons obtained chiefly from petroleum,,acolorless, transparent, oily liquid free or nearly so fromfluorescence, odorless, as well as tasteless when cold. Its specificgravity varies between 0.828-0905 at 25 centigrade. The preferred oil tobeus'ed has a specific gravity of approximately 0.86.

The paraflin-wax used is a purified mixture of solid hydrocarbonsusually obtained from petroleum, is colorless, and is more or lesstranslucent and odorless, as well as tasteless. ][t is slightly greasyto the touch. The paraffin preparation has a melting point at about 52centigrade.

The beeswax is the pure yellow beeswax containing no impurities, such asadded par afiin-wax.

The paracoumarone resin used is a synan approximate bles rosin somewhatand is a dark reddish brown. The source is from the polymeriza tion ofaromatic naphthas and technically it consists essentially of a mixtureof polymerization products of coumarone, indene'and their homologs.Practice has demonstrated that its use is preferable to ordinary rosinor colophony, because it contains essentially no material which isvolatilized during the "heating of the wax mixture and also because ofits remarkable chemical inertness. Ordinary rosin partly decomposes,yielding volatile products and leavlng a gummy resinous residue in thebottom of the mixture which is annoying because of its adherence to thesides and bottom of the container and be cause the initial properties ofthe mixture are thus disturbed.

The employment in the preservative com pounded mixture of the mineraloil is to give a soft coat-like mixture and one highly pliable. Thebeeswax aids in a similar manner and inaddition imparts to thecompounded mixture a certain toughness which is decidedly advantageousto the same. The resin serves to make the wax-like mixture adhere firmlyto the wrapped cheese, food, yeast or other similar products, andlikewise to strengthen the same so contained for preservation, shipmentor handling in a sanitary or hygienic manner.

The foregoing described ingredients entering into the composition of thecompounded mixture of my said invention it has been found by extendedpractice to give most desirable results by mixing in any Well known typeof steam jacketed kettle in which they respectively, melt and form ahomogeneous mixture at about 100 centigrade. The extreme temperature forcoating the foil wrapped product, such as cheese or yeast, is between110 and 120 centigrade. Within range of the recited temperatures thewrapped products will have a thin coating rovided them, in a verypliable condition. hysically when cold or more or less set, it is of alight amber color and has a melting point at about 525 centigrade. The

mixture in its liquefied condition is of a dark brown color.

It has been found that the hereinbefore describedcompounded preservativemixture for the purposes defined possesses the following decidedlyadvantageous features.

First. It is very pliable in application to packaged food products,permitting of very considerable bending, without cracking, as well asclinging or adhering to the foil or other type wrapper to which applied.Moreover, it enters the pores of the wrapper,

,thus sealing the product completely, as practice has demonstrated, tothe surrounding air. By the exclusion of the air is absolutely preventedgrowth of aerobic molds, particularly on soft cheese, cream cheese,Neufchatel cheese and ancre cheese, thus making it possible to keep thesame from molding for periods of months, maintained at ordlnarytemperatures or under refrigerating conditions. The use of the compounddoes not so completely close the package as to make tearing of the .foildiflicult to open the package at the seams.

Second. This compounded preparation is transparent, thus allowing thelabel to be clearly observed. The coating is also Waterproof.

Third. Tf stored in a damp place, it is equally efficient in preventingencroachment of molds to the cheese from outside sources,

as well as preventing absorption of undesirable odors.

Fourth. It is found it will prevent the Monaco growth of aerobic moldson any foodproducts in ,wrapped form. Moreover, if accidentallyingested, it does not harm the human system. It dries with greatereagerness than ordinary waxes, particularly in a current of air." Againit does not stick tenaciously to other objects, when partially cool, ifplaced against them.

Fifth. It will not prevent changes in any food product due tothe'bacterial activity those described by the foregoing formula,

the proportions may be varied.- In a similar manner the ingredients arecapable of substitution by other similar elements, as a different resinor wax, and a preservative mixture similar in physical properties to theoriginal formula as hereinabove given and equally efficient results beobtained.

Having thus described the nature and ob jects of my invention, what Iclaim as new and desire to secure by Letters Patent is 1. As anarticleof manufacture, a preservative waterproof and mold proof compoundedmixture composed of mineral oil, paraffin-wax, beeswax and resin inproportions substantially as described and for the purposes set forth.

2. As an article of manufacture, a preservative waterproof and moldproofcompounded mixture, composed of mineral oil, paraflin-wax, beeswax andparacoumarone resin compounded under heat in proportions substantiallyas hereinbefore described and for the purposes set forth.

3. As an article of manufacture, a preservative waterproof and moldproofcompounded mixture, composed of mineral oil, paraffin-wax, beeswax andparacoumarone resin compounded and combined under steam heat inproportions substantially as hereinbefore described to provide ahomogeneous waterproof and moldproof mixture, as and for the purposesset forth.

4. The method of producing a preservative waterproof and moldproofcompounded mixture which consists in treating under heat mineral oil,parafiin wax, beeswax and resin in respective proportions substantiallyas set forth to thereby transform into a homogeneous waterproof andmoldproof mixture and then applying at a temperature above that at whichcompounding of the mixture was efiected, substantially as and for thepurposes set forth.

waterproof and moldproof compounded mixturewhich consists oftreatingmin'eral oil,

paraflin wax, beeswax and paracoumarone resin in respective proportionssubstantially .as'set forth and under steam heat at about 100 centigradeto thereby transforn into a. substantially homogeneous mixture and thenapplying at a temperature-ranging between 110 and 120 centigrade inthecoatin of 10 'a wrapped food article to be sealed to air as well as thegrowth of aerobic molds, substantiallyas set forth. I

In Witness whereof, l[ have hereunto set my signature in the presence oftwo subscribing witnesses.

. GHARLES o. FERRARI.

Witnesses I J. WAIJmR Douomss, Rose E. MCCARTHY.

